MPChartLib绘制曲线图

关于android实现绘制曲线图或者折线图功能，有很多第三方架包，也可以自己画  ，不过不建议自己画，第一时间浪费掉了  ，第二性能还不一定好，既然有第三方的，为什么不直接使用第三方的呢？
刚开始我使用的是achartengine 这个第三方架包 ，真的是不咋地啊  ，做出来给boss看 各种不行，也不知道怎么改了，没办法  只有换其他的 ，后来到网上去找找  实在找不到了  ，只有去问问其他做技术的了，他们给我推荐了这个MpChartLib，GitHub的地址为：  哈哈   这次集成更简单  而且boss一看就通过了，想想之前的那个真苦逼啊  ， 好了  废话不多说了 ，老规矩，先看工程结构图：

代码真的很简单，就一个类这里写代码片

package com.example.linedemo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.github.mikephil.charting.charts.CombinedChart;
import com.github.mikephil.charting.charts.CombinedChart.DrawOrder;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.XAxis.XAxisPosition;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.BarDataSet;
import com.github.mikephil.charting.data.BarEntry;
import com.github.mikephil.charting.data.BubbleData;
import com.github.mikephil.charting.data.BubbleDataSet;
import com.github.mikephil.charting.data.BubbleEntry;
import com.github.mikephil.charting.data.CandleData;
import com.github.mikephil.charting.data.CandleDataSet;
import com.github.mikephil.charting.data.CandleEntry;
import com.github.mikephil.charting.data.CombinedData;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import com.github.mikephil.charting.data.ScatterData;
import com.github.mikephil.charting.data.ScatterDataSet;
import com.github.mikephil.charting.utils.ColorTemplate;
import android.graphics.Color;

public class chartView extends Activity implements OnClickListener {
    private Intent intent;
    private CombinedChart mChart;
    private final int itemcount = 12;
    private List months = new ArrayList();
    private List> month = new ArrayList>();
    private List> data = new ArrayList>();
    private String[] mTimes = new String[] { "00:00", "1:00", "2:00", "3:00",
            "4:00", "5:00", "6:00", "7:00", "8:00", "9:00", "10:00", "11:00",
            "12:00", "13:00", "14:00", "15:00", "16:00", "17:00", "18:00",
            "19:00", "20:00", "21:00", "22:00", "23:00", };
    private int[] arrs = {10,15,12,22,43,25,19,30,32,15,8,26,19,34,44,20,15,5,35,24,16,28,43};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.chartview);
        ImageView backbtn = (ImageView) findViewById(R.id.backbtn);
        backbtn.setOnClickListener(this);

        intent = getIntent();
        TextView titleView = (TextView) findViewById(R.id.title_bar_name);
        titleView.setText(intent.getStringExtra("days") + "天坐姿曲线图");
        mChart = (CombinedChart) findViewById(R.id.chart1);
        mChart.setDescription("");
        mChart.setBackgroundColor(Color.WHITE);
        mChart.setDrawGridBackground(true);
        mChart.setDrawBarShadow(true);
        mChart.setMaxVisibleValueCount(100);
        mChart.getAxisRight().setEnabled(false);

        // draw bars behind lines
        mChart.setDrawOrder(new DrawOrder[] { DrawOrder.BAR, DrawOrder.BUBBLE,
                DrawOrder.CANDLE, DrawOrder.LINE, DrawOrder.SCATTER });

        YAxis rightAxis = mChart.getAxisRight();
        rightAxis.setDrawGridLines(false);

        YAxis leftAxis = mChart.getAxisLeft();
        leftAxis.setDrawGridLines(false);

        XAxis xAxis = mChart.getXAxis();
        xAxis.setPosition(XAxisPosition.BOTTOM);
        Map map = null;
        for (int i = 0; i < mTimes.length; i++) {
            map = new HashMap();
            map.put("addDay",mTimes[i]);
            month.add(map);
        }

        Map dataMap = null;
        for (int i = 0; i < arrs.length; i ++) {
            dataMap = new HashMap();
            dataMap.put("learnCount", arrs[i]);
            data.add(dataMap);
        }

        // 横向显示的时间 12/3 12/4
        for (int index = 0; index < month.size(); index++) {
            Map cdata = month.get(index);

            months.add(cdata.get("addDay").toString());
        }

        CombinedData data = new CombinedData(months);

        data.setData(generateLineData());
        // data.setData(generateBarData());
        // //data.setData(generateBubbleData());
        // data.setData(generateScatterData());
        // data.setData(generateCandleData());

        mChart.setData(data);
        mChart.invalidate();
    }

    private LineData generateLineData() {

        LineData d = new LineData();

        ArrayList entries = new ArrayList();
        // 纵向显示的数据
        for (int index = 0; index < data.size(); index++) {
            Map cdata = data.get(index);

            entries.add(new Entry(Integer.parseInt(cdata.get("learnCount")
                    .toString()), index));
        }

        LineDataSet set = new LineDataSet(entries,
                intent.getStringExtra("days") + "天坐姿曲线图");
        set.setColor(Color.rgb(40, 40, 40));
        set.setLineWidth(2.5f);
        set.setCircleColor(Color.rgb(40, 40, 40));
        set.setCircleSize(5f);
        set.setFillColor(Color.rgb(40, 40, 40));
        set.setDrawCubic(true);
        set.setDrawValues(true);
        set.setValueTextSize(10f);
        set.setValueTextColor(Color.rgb(40, 40, 40));

        set.setAxisDependency(YAxis.AxisDependency.LEFT);

        d.addDataSet(set);

        return d;
    }

    private BarData generateBarData() {

        BarData d = new BarData();

        ArrayList entries = new ArrayList();

        for (int index = 0; index < itemcount; index++)
            entries.add(new BarEntry(getRandom(15, 30), index));

        BarDataSet set = new BarDataSet(entries, "Bar DataSet");
        set.setColor(Color.rgb(60, 220, 78));
        set.setValueTextColor(Color.rgb(60, 220, 78));
        set.setValueTextSize(10f);
        d.addDataSet(set);

        set.setAxisDependency(YAxis.AxisDependency.LEFT);

        return d;
    }

    protected ScatterData generateScatterData() {

        ScatterData d = new ScatterData();

        ArrayList entries = new ArrayList();

        for (int index = 0; index < itemcount; index++)
            entries.add(new Entry(getRandom(20, 15), index));

        ScatterDataSet set = new ScatterDataSet(entries, "Scatter DataSet");
        set.setColor(Color.GREEN);
        set.setScatterShapeSize(7.5f);
        set.setDrawValues(false);
        set.setValueTextSize(10f);
        d.addDataSet(set);

        return d;
    }

    protected CandleData generateCandleData() {

        CandleData d = new CandleData();

        ArrayList entries = new ArrayList();

        for (int index = 0; index < itemcount; index++)
            entries.add(new CandleEntry(index, 20f, 10f, 13f, 17f));

        CandleDataSet set = new CandleDataSet(entries, "Candle DataSet");
        set.setColor(Color.rgb(80, 80, 80));
        set.setBodySpace(0.3f);
        set.setValueTextSize(10f);
        set.setDrawValues(false);
        d.addDataSet(set);

        return d;
    }

    protected BubbleData generateBubbleData() {

        BubbleData bd = new BubbleData();

        ArrayList entries = new ArrayList();

        for (int index = 0; index < itemcount; index++) {
            float rnd = getRandom(20, 30);
            entries.add(new BubbleEntry(index, rnd, rnd));
        }

        BubbleDataSet set = new BubbleDataSet(entries, "Bubble DataSet");
        set.setColors(ColorTemplate.VORDIPLOM_COLORS);
        set.setValueTextSize(10f);
        set.setValueTextColor(Color.WHITE);
        set.setHighlightCircleWidth(1.5f);
        set.setDrawValues(true);
        bd.addDataSet(set);

        return bd;
    }

    private float getRandom(float range, float startsfrom) {
        return (float) (Math.random() * range) + startsfrom;
    }

    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub

    }
}

最后再来看下布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FFFFFF"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="44dp"
        android:background="#67ade9"
        android:gravity="center_vertical" >

        <TextView
            android:id="@+id/title_bar_name"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_centerInParent="true"
            android:ellipsize="end"
            android:gravity="center"
            android:singleLine="true"
            android:text="坐姿曲线图"
            android:textColor="#ffffff"
            android:textSize="17dp" />

        <ImageView
            android:id="@+id/backbtn"
            android:layout_width="45dp"
            android:layout_height="40dp"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:src="@drawable/go_back" />
    RelativeLayout>

    <com.github.mikephil.charting.charts.CombinedChart
        android:id="@+id/chart1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

LinearLayout>

最后看下运行后的效果图吧：

Demo下载地址：点击下载